CN101180600A - Information input apparatus using ultrasonic waves and position recognition method thereof - Google Patents
Information input apparatus using ultrasonic waves and position recognition method thereof Download PDFInfo
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- CN101180600A CN101180600A CNA2005800498976A CN200580049897A CN101180600A CN 101180600 A CN101180600 A CN 101180600A CN A2005800498976 A CNA2005800498976 A CN A2005800498976A CN 200580049897 A CN200580049897 A CN 200580049897A CN 101180600 A CN101180600 A CN 101180600A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
- G06F3/0433—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves in which the acoustic waves are either generated by a movable member and propagated within a surface layer or propagated within a surface layer and captured by a movable member
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/014—Hand-worn input/output arrangements, e.g. data gloves
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03543—Mice or pucks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/033—Indexing scheme relating to G06F3/033
- G06F2203/0335—Finger operated miniaturized mouse
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Position Input By Displaying (AREA)
Abstract
The present invention relates to an input apparatus, and more particularly, to an information input apparatus and position recognition apparatus using an ultrasonic wave. The information input apparatus includes an input unit for generating an ultrasonic signal and a receiver for receiving the ultrasonic signal generated in the input unit, wherein the input unit includes ultrasonic generator for generating an ultrasonic signal according to a movement of the input unit, and a controller for generating a control signal to enable the ultrasonic generator to generate the ultrasonic waves, the receiver includes an ultrasonic receiver for receiving the ultrasonic signal generated in the ultrasonic generator, and a signal processor for performing a signal processing in a phase sensitive cross-correlation scheme in order to track the position of the input unit using the ultrasonic signal received in the ultrasonic receiver.
Description
Technical field
The present invention relates to a kind of input equipment, more particularly, relate to and use hyperacoustic information input equipment and location recognition method thereof in a kind of input equipment, described information input equipment can be discerned user's information drawn or that write.
Background technology
During computer entry device in looking back input equipment, usually, computing machine has such as the input equipment of keyboard and mouse with such as the output device of display and printer, and described input equipment and output device all are connected to computing machine.In addition, computing machine can be connected to a plurality of peripherals of carrying out multiple function.These peripherals comprise the sound of output in the computing machine loudspeaker, drive the DVD-ROM driver etc. of the DVD title of store movies or multi-medium data.
Equally, computer peripheral also is diversified according to its purposes, wherein, input equipment also is diversified, comprise keyboard or mouse, be used to import the microphone of user speech, the use a computer scanner that reads picture or photo, touch-screen, the digital quantizer that passes through the touch input position of hand, be generally used in CAD or the graphic designs owing to digital quantizer can be used as pen.
Computing machine is so various, thereby the user can accurately be input to computing machine with data or information according to its intention.For example, keyboard has the key that is assigned to character, numeral or special symbol, therefore, when the user presses corresponding key, can input character, numeral or special symbol.
Yet the problem of this keyboard is: the user is difficult to import the data or the information (as curve) of any type, and the user is difficult to the position that a bit moves on to expectation on the indicator screen.Therefore, this input equipment of mouse occurred and can import the data of indication any type or the problem of information with solution.Yet this mouse can not accurately be imported data or information, solves this problem thereby a kind of input equipment such as digital quantizer occurred.
Simultaneously, have the hyperacoustic computer entry device of a kind of use in being similar to the pen-type computer input equipment of digital quantizer, this computer entry device is with the mobile generation ultrasound wave of beginning to write, and recognizing site.Come described with reference to the accompanying drawings.
Fig. 1 illustrates the diagrammatic sketch that uses hyperacoustic pen-type computer input equipment in the prior art.
With reference to Fig. 1, when the user is being attached with ultrasonic sensor 30 and 40 and have when moving the pen 10 that comprises ultrasonic generator 15 on the panel 20 of pre-sizing, ultrasonic generator 15 is according to the mobile generation ultrasound wave of pen 10.Be attached to the left ultrasonic sensor 30 of panel 20 both sides and the ultrasound wave that right ultrasonic sensor 40 sensings produce, and the position of following the tracks of pen 10, thereby data or information are imported into computing machine.
Yet, being used to produce hyperacoustic ultrasonic generator owing to use hyperacoustic traditional pen type computer entry device to have at the middle part of pen, therefore the mistake of position of the pen of computing machine has appearred being input to, and this position is different from user's intention.In addition, such problem also occurred, that is, can't sense moving less than the pen of the hyperacoustic wavelength that is produced.
Summary of the invention
Therefore, the object of the present invention is to provide hyperacoustic input equipment of a kind of use and location recognition method thereof, described equipment uses the inertia that utilizes hyperacoustic input equipment can discern the exact position of input block.
According to an aspect of the present invention, a kind of information input equipment is provided, this information input equipment comprises the input block that is used to produce ultrasonic signal and input position and is used to receive the receiver of the ultrasonic signal that input block produces, wherein, described input block comprises: ultrasonic generator, according to the mobile generation ultrasonic signal of input block; Controller, generation makes ultrasonic generator produce hyperacoustic control signal, and described receiver comprises: ultrasonic receiver receives the ultrasonic signal that ultrasonic generator produced; Signal processor is carried out signal Processing according to phase sensitive cross-correlation scheme, with the position of using ultrasonic signal that ultrasonic receiver was received to follow the tracks of input block.
According to moving of can the sensing more much smaller input block in the position of the hyperacoustic information input equipment of the use of the embodiment of the invention by following the tracks of input block according to phase sensitive cross-correlation scheme than the wavelength of the ultrasonic signal that produces, therefore, can reduce the error that causes owing to noise.In addition, can reduce the frequency of ultrasonic signal by phase sensitive cross-correlation scheme, the ultrasonic signal with lower frequency has little loss in air.
According to a further aspect in the invention, provide a kind of use hyperacoustic information input equipment, this information input equipment comprises the input block that is used to produce ultrasonic signal and input position and is used to receive the receiver of the ultrasonic signal that input block produces, wherein, described input block comprises: ultrasonic generator, according to the mobile generation ultrasonic signal of input block; The first direction measuring unit, measure input block towards direction; Controller produces the control signal that makes ultrasonic generator produce ultrasound wave and make the direction of first direction measuring unit measurement input block, and described receiver comprises: ultrasonic receiver receives the ultrasonic signal that ultrasonic generator produced; The second direction measuring unit, measure receiver towards direction; The direction calculating device, use first direction measuring unit and the measured all directions of second direction measuring unit are calculated the relative direction vector between input block and the receiver; Signal processor is carried out signal Processing according to phase sensitive cross-correlation scheme, with the position of using ultrasonic signal that ultrasonic receiver was received to follow the tracks of input block; The position of the input block of following the tracks of and the final position of input block are followed the tracks of according to input block and the relative direction vector between the receiver that the direction calculating device is produced in the Position Tracking unit in signal processor.
According to another embodiment of the present invention, the position that a kind of direction of using hyperacoustic information input equipment to consider input block and receiver is followed the tracks of input block, thereby but this information input equipment sensing compares moving of the much smaller input block of the wavelength of the ultrasonic signal that produces, reduce the caused by noise error, and follow the tracks of the exact position of input block.In addition, can reduce the frequency of ultrasonic signal by phase sensitive cross-correlation scheme, the ultrasonic signal with the frequency after reducing has little loss aloft.
According to a further aspect in the invention, a kind of location recognition method that uses hyperacoustic information input equipment is provided, this information input equipment comprises the input block that is used to produce ultrasonic signal and input position and is used to receive the receiver of the ultrasonic signal that input block produces, said method comprising the steps of: according to the mobile generation ultrasonic signal of input block; Receive the ultrasonic signal that produces; Measure the direction of input block and receiver respectively, and use described direction to calculate the relative direction vector of input block and receiver; Carry out signal Processing according to phase sensitive cross-correlation scheme, with the position of using ultrasonic signal that ultrasonic receiver was received to follow the tracks of input block; The final position of following the tracks of input block according to the position and the relative direction vector between input block that in calculation procedure, calculates and the receiver of the input block of in signal processor, following the tracks of.
According to said method, the position that a kind of direction of using hyperacoustic information input equipment to consider input block and receiver is followed the tracks of input block, thereby but this information input equipment sensing compares moving of the much smaller input block of the wavelength of the ultrasonic signal that produces, reduce the caused by noise error, and follow the tracks of the exact position of input block.In addition, can reduce the frequency of ultrasonic signal by phase sensitive cross-correlation scheme, the ultrasonic signal with the frequency after reducing has little loss aloft.
Description of drawings
By the description of with reference to the accompanying drawings preferred embodiment of the present invention being carried out, above-mentioned purpose of the present invention, other characteristics and advantage will become apparent, wherein:
Fig. 1 illustrates the diagrammatic sketch that uses the structure of hyperacoustic pen-type computer input equipment in the prior art;
Fig. 2 is the diagrammatic sketch that illustrates according to the schematic structure of the hyperacoustic information input equipment of use of the embodiment of the invention;
Fig. 3 is the diagrammatic sketch that illustrates according to the frame structure of the hyperacoustic information input equipment of use of the embodiment of the invention;
Fig. 4 is the process flow diagram that illustrates according to the operation of the hyperacoustic information input equipment of use of the present invention;
Fig. 5 illustrates the process flow diagram of process of following the tracks of the position of input block according to the use phase sensitive cross-correlation of the embodiment of the invention.
Embodiment
To describe the preferred embodiments of the present invention in detail now, its example is shown in the drawings.In description of the invention, determining that the detailed description to relevant known function or structure can unnecessarily make under the unclear situation of the present invention, with the description of omitting it.
Fig. 2 is the diagrammatic sketch that illustrates according to the schematic structure of the hyperacoustic information input equipment of use of the embodiment of the invention, wherein, supposes that described input media is that pen type input device provides description.For reference, under the situation of the input media of glove type, this input media can be to hold the glove type of whole hand or one or several finger finger mouse type of inserting described gloves and using only.
With reference to Fig. 2, use hyperacoustic information input equipment to generally include: input block 100 produces ultrasonic signal and input position; Receiver 200 is received in the ultrasonic signal that is produced in the input block 100.
Input block 100 comprises: ultrasonic generator 110 produces ultrasonic signal; First direction measuring unit 120, measure input block 100 towards direction.Receiver 200 is stocks, and it can be attached to the fixed part of existing iron plate 300, and receiver 200 comprises: ultrasonic receiver 210 receives the ultrasonic signal that ultrasonic generator 110 is produced; Second direction measuring unit 220, measure receiver 200 towards direction.
Simultaneously, Fig. 3 is the diagrammatic sketch that illustrates according to the frame structure of the hyperacoustic information input equipment of use of the embodiment of the invention.As shown in Figure 3, input block 100 comprises ultrasonic generator 110, first direction measuring unit 120, action button 130, function button 140, sensor 150, controller 160 and first transmitter 170.
First direction measuring unit 120 measure input blocks 100 towards direction.First direction measuring unit 120 use three axis accelerometers measure input block 100 towards direction, the direction vector of the input block 100 of the measurement described is used to measure relative direction vector between input block 100 and the receiver 200 together with the direction vector of the receiver of measuring 200 in second direction measuring unit 220.
In addition, when user's push button 130 3 times,, be input to the width difference of the line of computing machine in the step of each appointment.According to the dynamics of pressure, the step of this appointment can be two or three steps, and comprises the step of the operation that is used to stop input block 100.
The ultrasonic signal that first transmitter 170 is produced ultrasonic generator 110 sends to the outside of input block 100, and the ultrasonic receiver 210 of receiver 200 receives the ultrasonic signal that sends to the outside by first transmitter 170.
Simultaneously, receiver 200 is received in the ultrasonic signal that is produced in the input block 100, following the tracks of the position of input block 100, and the position of following the tracks of is sent to computing machine.
This receiver 200 comprises ultrasonic receiver 210, second direction measuring unit 220, storer 225, reception and control module 230, signal correction unit 240, direction calculating device 250, signal processor 260, Position Tracking unit 265 and second transmitter 270.
Second direction measuring unit 220 measure receivers 200 towards direction.This second direction measuring unit 220 use three axis accelerometers measure receiver 200 towards direction, the direction vector of the receiver 200 of measurement is used to measure relative direction vector between input block 100 and the receiver 200 together with the direction vector of the input block of having measured 100.
The reason of measuring the relative vector between input block 100 and the receiver 200 is in order to follow the tracks of the exact position of input block 100.Here, not the end that is positioned at input block 100 owing to produce hyperacoustic ultrasonic generator 110, so when following the tracks of the position of input block 100, such mistake occurred, that is, there be not the physical location of input based on user view.
Therefore, when the end of using the input block 100 measured in advance and relative direction vector between the receiver 200 and input block 100 and and input block 100 be separated by distance value between the ultrasonic generator 110 of preset distance when calculating, by using trigonometry (trigonometry), can accurately measure the position of the end of input block 100 to proofread and correct this mistake.
Reception and control module 230 output control signals are so that second direction measuring unit 220 can be measured the direction of receiver 200, and the tram of input block 100 can be followed the tracks of in the Position Tracking unit 265 of signal processor 260.
The reason of proofreading and correct ultrasonic signal is: ultrasonic receiver 210 is difficult to measure ultrasound wave, is exposed to the decay that is taken place when aerial unless proofread and correct ultrasonic signal.At this moment, temporal gain can be stored in the storer 225 with the form or the inquiry tableau format of formula.
The final position (position of ultrasonic generator) that the relative direction vector of the position (position of ultrasonic generator) of the input block 100 that Position Tracking unit 265 use signal processors 260 are followed the tracks of and input block 100 that direction calculating device 250 is calculated and receiver 200 is followed the tracks of input block 100.At this moment, can obtain the final position of input block 100 by the application trigonometry.
Finally, second transmitter 270 sends to computing machine with the final position of the input block 100 of tracking in the Position Tracking Systems unit 265.
Below, the operation according to the hyperacoustic information input equipment of use of the present invention is described with reference to the accompanying drawings.
Fig. 4 is the process flow diagram that illustrates according to the operation of the hyperacoustic information input equipment of use of the present invention.
With reference to Fig. 4, controller 160 checks by action button 130 whether the user needs to operate input block 100 (S11).When check result is when existing operation to require, controller 160 makes ultrasonic generator 110 produce ultrasonic signals, make first direction measuring unit 20 measure input blocks 100 towards direction, and make the position input beginning (S12) of input block 100.At this moment, first direction measuring unit 120 uses the three axis accelerometer direction of measurement.
The ultrasonic receiver 210 of receiver 200 receives the ultrasonic signal (S13) that ultrasonic generator 110 is produced, and the ultrasonic signal of reception is proofreaied and correct (S14) by the control of the temporal gain in the signal correction unit 240 prime amplifier.At this moment, carry out correction by temporal gain according to the time of reception gain control correction time prime amplifier of the ultrasonic signal that receives.
The ultrasonic signal of proofreading and correct is converted into digital signal (S15), and is used in position (position of ultrasonic generator) that signal processor 260 is followed the tracks of input block 100 by phase sensitive cross-correlation scheme (S16).In addition, use the position (position of ultrasonic generator) of the input block of following the tracks of 100 and the input block 100 that in direction calculating device 250, calculates and the relative direction vector of receiver 200, by using trigonometry, the final position (position of the end of input block) of tracking input block 100 (S17) in the Position Tracking Systems unit 265.
In addition, the final position (position of the end of input block) of the input block of following the tracks of in advance 100 is sent to computing machine (S18) by second transmitter 270.At this moment, second transmitter 270 can be connected by USB (universal serial bus) (USB) with computing machine.
Finally, reception and control module 230 check that the operation that whether has input block 100 stops requiring (S19).When check result is that operation is terminated when existing operation to stop requiring, otherwise input block 100 continues the executing location input.
Simultaneously, provide the detailed description of the phase sensitive cross-correlation scheme of signal processor 260 with reference to the accompanying drawings.
Fig. 5 illustrates the process flow diagram of process of following the tracks of the position of input block according to the use phase sensitive cross-correlation of the embodiment of the invention, wherein, the digital signal of coming from the ultrasonic signal conversion that receives is imported into signal processor 260, and the final position of input block 100 is tracked.
With reference to Fig. 5, reception and control module 230 make the digital signal of conversion can be imported into signal processor 260 (S21), and determine peak value output channel (peak output channel) (S22) from the digital signal of input.In addition, come relatively peak value output channel and the reference signal (S23) determined, thereby find the approximate peak of the position that is used to follow the tracks of input block 100 by simple crosscorrelation.
In addition, by finding phase place zero crossing (phase zero crossing point) to estimate that phase place crosses null value (phase zero crossing value) (S24), the position of input block 100 (position of ultrasonic generator) tracked (S25) once more.That is, phase sensitive cross-correlation is a kind of like this scheme: after cross-correlation procedure by finding the phase place zero crossing to find to be used to carry out the accurate peak value of Position Tracking once more.
Use position (position of ultrasonic generator) and input block 100 that in direction calculating device 250, calculates and the relative direction vector between the receiver 200, use final position (position of the end of input block) that trigonometry follows the tracks of input block 100 (S26) by the input block 100 of phase sensitive cross-correlation process tracking.
The final position of the input block of being followed the tracks of in addition, 100 (position of the end of input block) is stored in the storer 225 as the reference signal (S27) that is used to follow the tracks of the next position.
In addition, when following the tracks of the position of input block 100, if only carry out cross-correlation procedure, should improve the peak value of sampling rate with interpolation so with the point that finds the position that is used to follow the tracks of input block 100, calculated amount increases as a result, and the value that obtains also comprises the error element that produces owing to noise effect.
Yet, when in signal processing, using phase sensitive cross-correlation scheme, do not need other interpolation, therefore, calculated amount reduces relatively, thus the moving of can sensing more much smaller input block than carrier wavelength, and signal to noise ratio (snr) increases.
As mentioned above, according to the present invention, therefore the position of using ultrasound wave and inertia accurately to follow the tracks of input block is compared with the input block of the position that is used to follow the tracks of input block, can accurately carry out input.
Although describe and show the present invention with reference to the preferred embodiments of the present invention, it will be apparent to those skilled in the art that under the situation that does not break away from the spirit and scope of the present invention, can carry out various modifications and variations to it.Therefore, the present invention covers the interior multiple modification and the modification of scope of claim and equivalent thereof.
Claims (14)
1. information input equipment, comprising: input block is used to produce ultrasonic signal; Receiver is used to receive the ultrasonic signal that input block produces, wherein,
Described input block comprises:
Ultrasonic generator is according to the mobile generation ultrasonic signal of input block; With
Controller, generation makes ultrasonic generator produce hyperacoustic control signal,
Described receiver comprises:
Ultrasonic receiver receives the ultrasonic signal that ultrasonic generator produced; With
Signal processor is carried out signal Processing according to phase sensitive cross-correlation scheme, connects to use ultrasound wave
The position that the receipts ultrasonic signal that device received is followed the tracks of input block.
2. information input equipment as claimed in claim 1, wherein, described input block is pen or glove type, and comprises the function button that is used to operate the action button of input block or is used to carry out specific function.
3. information input equipment as claimed in claim 2, wherein, described action button is operated by pushing of user, depends on the dynamics of pushing from the width of the line of input block input.
4. information input equipment as claimed in claim 1, wherein, described receiver comprises three or more ultrasonic receivers of the locus that is used to follow the tracks of input block.
5. information input equipment as claimed in claim 1, wherein, described receiver comprises: signal correction unit, by proofreading and correct ultrasonic signal according to the time of reception execution time gain control of the ultrasonic signal that ultrasonic receiver received.
6. one kind is used hyperacoustic information input equipment, and comprising: input block is used to produce ultrasonic signal and input position; Receiver is used to receive the ultrasonic signal that input block produces, wherein,
Described input block comprises:
Ultrasonic generator is according to the mobile generation ultrasonic signal of input block;
The first direction measuring unit, measure input block towards direction; With
Controller, generation make ultrasonic generator produce ultrasound wave and the first direction measuring unit are surveyed
The control signal of the direction of amount input block,
Described receiver comprises:
Ultrasonic receiver receives the ultrasonic signal that ultrasonic generator produced;
The second direction measuring unit, measure receiver towards direction;
The direction calculating device, use first direction measuring unit and the measured all directions of second direction measuring unit are calculated the relative direction vector between input block and the receiver;
Signal processor is carried out signal Processing according to phase sensitive cross-correlation scheme, connects to use ultrasound wave
The position that the receipts ultrasonic signal that device received is followed the tracks of input block; With
The position of the input block of following the tracks of and the final position of input block are followed the tracks of according to input block and the relative direction vector between the receiver that the direction calculating device is produced in the Position Tracking unit in signal processor.
7. information input equipment as claimed in claim 6, wherein, described input block is pen or glove type, and comprises the function button that is used to operate the action button of input block or is used to carry out specific function.
8. information input equipment as claimed in claim 7, wherein, described action button is operated by pushing of user, depends on the dynamics of pushing from the width of the line of input block input.
9. information input equipment as claimed in claim 6, wherein, described receiver comprises three or more ultrasonic receivers of the locus that is used to follow the tracks of input block.
10. information input equipment as claimed in claim 6, wherein, described receiver comprises: signal correction unit, by proofreading and correct ultrasonic signal according to the time of reception execution time gain control of the ultrasonic signal that in ultrasonic receiver, receives.
11. information input equipment as claimed in claim 6, wherein, described first direction measuring unit and second direction measuring unit use the three axis accelerometer direction of measurement.
12. location recognition method that uses hyperacoustic information input equipment, this information input equipment comprises the input block that is used to produce ultrasonic signal and input position and is used to receive the receiver of the ultrasonic signal that input block produces, said method comprising the steps of:
Mobile generation ultrasonic signal according to input block;
Receive the ultrasonic signal that produces;
Measure the direction of input block and receiver respectively, and use described direction to calculate the relative direction vector of input block and receiver;
Carry out signal Processing according to phase sensitive cross-correlation scheme, with the position of using ultrasonic signal that ultrasonic receiver was received to follow the tracks of input block;
According to position and the input block of calculating and the relative direction vector between the receiver of the input block of in signal processor, following the tracks of, follow the tracks of the final position of input block.
13. method as claimed in claim 12, wherein, described measurement comprises the substep that uses the three axis accelerometer direction of measurement.
14. method as claimed in claim 12 is further comprising the steps of: by proofreading and correct ultrasonic signal according to the time of reception execution time gain control of the ultrasonic signal that in ultrasonic receiver, receives.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050044592 | 2005-05-26 | ||
| KR1020050044592A KR100534590B1 (en) | 2005-05-26 | 2005-05-26 | Input device and position recognition method using ultrasound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101180600A true CN101180600A (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800498976A Pending CN101180600A (en) | 2005-05-26 | 2005-09-06 | Information input apparatus using ultrasonic waves and position recognition method thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090103396A1 (en) |
| EP (1) | EP1891505A1 (en) |
| JP (1) | JP2008541291A (en) |
| KR (1) | KR100534590B1 (en) |
| CN (1) | CN101180600A (en) |
| WO (1) | WO2006126759A1 (en) |
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| CN103861284A (en) * | 2012-12-14 | 2014-06-18 | 联想(北京)有限公司 | Method and device for determining relative positions |
| WO2016192266A1 (en) * | 2015-05-29 | 2016-12-08 | 京东方科技集团股份有限公司 | Sound wave touch control device and electronic device |
| CN111102609A (en) * | 2019-12-10 | 2020-05-05 | 广东美的厨房电器制造有限公司 | Cooking equipment, food weight detection method and device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101037310B1 (en) | 2008-11-07 | 2011-05-26 | (주)펜앤프리 | Method and system for inputting information using ultrasonic signal |
| WO2013005142A1 (en) * | 2011-07-01 | 2013-01-10 | Koninklijke Philips Electronics N.V. | Light guide |
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- 2005-09-06 WO PCT/KR2005/002938 patent/WO2006126759A1/en active Application Filing
- 2005-09-06 US US11/920,557 patent/US20090103396A1/en not_active Abandoned
- 2005-09-06 JP JP2008512204A patent/JP2008541291A/en active Pending
- 2005-09-06 EP EP05808361A patent/EP1891505A1/en not_active Withdrawn
- 2005-09-06 CN CNA2005800498976A patent/CN101180600A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103861284A (en) * | 2012-12-14 | 2014-06-18 | 联想(北京)有限公司 | Method and device for determining relative positions |
| CN103861284B (en) * | 2012-12-14 | 2017-03-01 | 联想(北京)有限公司 | A kind of method and device determining relative position |
| WO2016192266A1 (en) * | 2015-05-29 | 2016-12-08 | 京东方科技集团股份有限公司 | Sound wave touch control device and electronic device |
| US10248263B2 (en) | 2015-05-29 | 2019-04-02 | Boe Technology Group Co., Ltd. | Acoustic wave touch device and electronic apparatus |
| CN111102609A (en) * | 2019-12-10 | 2020-05-05 | 广东美的厨房电器制造有限公司 | Cooking equipment, food weight detection method and device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090103396A1 (en) | 2009-04-23 |
| KR100534590B1 (en) | 2005-12-08 |
| WO2006126759A1 (en) | 2006-11-30 |
| EP1891505A1 (en) | 2008-02-27 |
| JP2008541291A (en) | 2008-11-20 |
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